View Full Version : 1947 Hammond CV
Hi, I've just joined and I'm looking for information on how originally the 1947 Hammond CV I rescued from a funeral home was connected to its accompanying two Jensen Model B-81 Bass Reflex Cabinets. The six-prong cable had to be cut because it disappeared into a conduit in the floor. The home seemed to have wired the CV from the back into its own sound system but those wires too were cut. Any information would be a big help. Thanks.
PS I'm a pipe organ technician by trade, but tubed electronics still baffle me.
07-24-2009, 10:37 PM
from the back of the CV preamp, there should be a couple things that are important when wireing it back up... (forget the six pin plug for now).... </p>
The two connectors labeled 'g' are the two balanced outputs... (works just like a XLR cable)...</p>
For an unbalanced line output... Go between a 'g' output... and ground (GND)</p>
Then There is the one labeled B+... this supplys the tubes with the potential they need (about 200VDC)... this would either come from a seperate powersupply or from the tonecabinet/leslie (this shares a ground with the audio signal on most tonecabinet cables)
... I am unfamilar with Jensen B-81's... cant tell you much</p>
Hope it helps... let me know if you have any questions
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